thoerup/traininfoservice/RequestPlotter.java

package dk.thoerup.traininfoservice;

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.zip.GZIPInputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import dk.thoerup.traininfoservice.banedk.TimeoutMap;


public class RequestPlotter extends HttpServlet {
        private static final long serialVersionUID = 1L;

        static final Logger log = Logger.getLogger(RequestPlotter.class.getName());

        static final String KML = "application/vnd.google-earth.kml";
        static final String KMZ = "application/vnd.google-earth.kmz";
        
        Map<String,String> cache = new TimeoutMap<String,String>(30*60*1000);

        class RequestPosition {
                public String ip;
                public Date time;
                public String lat;
                public String lng;
        }
        
        class PositionContainer {
                List<RequestPosition> blue = new ArrayList<RequestPosition>();
                List<RequestPosition> green = new ArrayList<RequestPosition>();
                List<RequestPosition> yellow = new ArrayList<RequestPosition>();
                List<RequestPosition> red = new ArrayList<RequestPosition>();
        }


        boolean isGz(String fileStr) {
                return fileStr.substring(fileStr.length() - 3).equals(".gz");
        }

        protected PositionContainer getRequestsFromFileWorker(boolean multiple) throws IOException{
                PositionContainer positions = new PositionContainer();

                try {
                        String files_single[] = {"/var/log/apache2/app_access.log"};
                        String files_multi[] = {"/var/log/apache2/app_access.log.3.gz", "/var/log/apache2/app_access.log.2.gz", "/var/log/apache2/app_access.log.1", "/var/log/apache2/app_access.log"};
                        
                        String files[];
                        
                        if (multiple == false) {
                                files = files_single;
                        } else {
                                files = files_multi;
                        }

                        SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss");
                
                        Date now = new Date();
                        for (String fileStr : files ) {
                                File f = new File(fileStr);
                                if ( !f.exists() ) {
                                        continue;
                                }
                                
                                FileInputStream fis = new FileInputStream(fileStr);
                                
                                InputStream input;
                                if ( isGz(fileStr)) {
                                        input = new GZIPInputStream(fis);
                                } else {
                                        input = fis;
                                }
                                
                                BufferedReader in = new BufferedReader( new InputStreamReader(input) );

        
                                String line;
                                while ( (line=in.readLine()) != null) {
                                        if (line.indexOf("LocateStation") == -1 ){
                                                continue;
                                        }
        
                                        if (line.indexOf("latitude=") == -1 ) {
                                                continue;
                                        }
                                        
                                        if (line.indexOf("longitude=") == -1) {
                                                continue;
                                        }
                                        
                                        RequestPosition pos = new RequestPosition();
        
                                        String toks[] = line.split(" ");
                                        pos.ip = toks[0];
        
                                        pos.time = df.parse( toks[3].replace("[", "") );
        
                                        String argpart = toks[6].split("\\?")[1];
        
                                        String args[] = argpart.split("&");
        
                                        pos.lat = args[0].split("=")[1];
                                        pos.lng = args[1].split("=")[1];
                                        
                                        
                                        long timediff = now.getTime() - pos.time.getTime();                                     
                                        if ( timediff < (3*60*60*1000) ) {
                                                positions.red.add(pos); //RED
                                        } else if ( timediff < (24*60*60*1000)) {
                                                positions.yellow.add(pos); //YELLOW
                                        } else if ( timediff < (7*24*60*60*1000)) {
                                                positions.green.add(pos); //GREEN
                                        } else {
                                                positions.blue.add(pos); //BLUE
                                        }
        
                                }
                                in.close();
                                input.close();
                                fis.close();
                        }
                } catch (ParseException pe) {
                        log.log(Level.SEVERE, "parseException", pe);
                        throw new IOException(pe);
                } catch (IOException e) {
                        log.log(Level.SEVERE, "getKml()", e);
                        throw e;
                }

                return positions;
        }
        
        protected void formatPositions(StringBuilder sb, String color, List<RequestPosition> list) {
                sb.append( "<Folder>\n");
                sb.append( " <name>" ).append(color).append("</name>\n");
                sb.append( " <open>0</open>\n" );
                
                int count=0;
                for(RequestPosition current : list) {
                        String id = color + count++; 
                        sb.append( " <Placemark id=\"" + id + "\">\n" );
                        sb.append( "  <styleUrl>#").append(color).append("</styleUrl>\n" );
                        sb.append( "  <description><![CDATA[IP=").append(current.ip).append("<br/>Time=").append(current.time).append("]]></description>\n" );
                        sb.append( "  <Point><coordinates>").append(current.lng).append(",").append(current.lat).append(",0</coordinates></Point>\n" );
                        sb.append( " </Placemark>\n" );                 
                }               
                
                sb.append("</Folder>\n");
        }

        protected String formatXml(PositionContainer positions) {
                StringBuilder sb = new StringBuilder(1024*1024);

                sb.append( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" );
                sb.append( "<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n" );
                sb.append( "<Document>\n" );            
                sb.append( " <description><![CDATA[");
                sb.append( "  Red:").append(positions.red.size()).append(" (whithin 3 hours)<br/>\n");
                sb.append( "  Yellow:").append(positions.yellow.size()).append(" (within 24 hours)<br/>\n");
                sb.append( "  Green:").append(positions.green.size()).append(" (within one week)<br/>\n");
                sb.append( "  Blue:").append(positions.blue.size()).append(" (older)<br/>\n");          
                sb.append( " ]]></description>");
                
                
                sb.append( " <Style id=\"red\">\n" );
                sb.append( "  <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/red-circle.png</href></Icon></IconStyle>\n" );
                sb.append( " </Style>\n");

                sb.append( " <Style id=\"yellow\">\n" );
                sb.append( "  <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/ylw-circle.png</href></Icon></IconStyle>\n" );
                sb.append( " </Style>\n" );

                sb.append( " <Style id=\"green\">\n" );
                sb.append( "  <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/grn-circle.png</href></Icon></IconStyle>\n" );
                sb.append( " </Style>\n\n" );
                
                sb.append( " <Style id=\"blue\">\n" );
                sb.append( "  <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/blu-circle.png</href></Icon></IconStyle>\n" );
                sb.append( " </Style>\n\n" );           
/*
                String overlay = 
              " <ScreenOverlay>" +
                " <name>Absolute Positioning: Top left</name>" +
                " <description>Absolute Positioning: Top left</description>" +
                " <visibility>1</visibility>" +
                "  <Icon>" +
                "   <href>http://code.google.com/apis/kml/documentation/top_left.jpg</href>" +
                "  </Icon>" +
                "  <overlayXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
                "  <screenXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
                "  <rotationXY x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
                "  <size x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
              " </ScreenOverlay>" ;
                
                sb.append(overlay);
        */      
                

                formatPositions(sb, "blue", positions.blue);
                formatPositions(sb, "green", positions.green);
                formatPositions(sb, "yellow", positions.yellow);
                formatPositions(sb, "red", positions.red);
                

                sb.append( "</Document>\n" );
                sb.append( "</kml>\n" );

                return sb.toString(); 
        }
        
        protected String getRequestsFromFile(boolean multiple) throws IOException {             
                String kmlData = null;
                String key;
                
                if (multiple == false)  {
                        key = "kmldata";
                } else {
                        key = "kmldata-multi";
                }
                                        
                kmlData = cache.get(key);
                        
                if (kmlData == null) {
                        kmlData = formatXml( getRequestsFromFileWorker(multiple) );
                        cache.put(key, kmlData);
                        kmlData += "<!-- from source -->";                      
                } else {
                        kmlData += "<!-- cached -->";
                }
                                        
                return kmlData;
        }
        
        boolean enabled(String param) {
                if (param == null || param.equals("")) {
                        return false;
                }
                
                int p = 0;
                try { 
                        p = Integer.parseInt(param);
                } catch (Exception e) {}
                
                return (p != 0);
        }

        @Override
        protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
                
                boolean multiple = enabled( req.getParameter("multi") );
                
                String kmlData = getRequestsFromFile(multiple);
                
                if ( enabled(req.getParameter("zip")) ) {

                        ByteArrayOutputStream baos = new ByteArrayOutputStream();

                        ZipOutputStream zip = new ZipOutputStream(baos);
                        zip.putNextEntry( new ZipEntry("trains.kml") );
                        zip.write( kmlData.getBytes() );
                        zip.closeEntry();
                        zip.close();

                        byte bytes[] = baos.toByteArray();

                        resp.setContentType(KMZ);
                        resp.setContentLength( bytes.length );
                        resp.getOutputStream().write(bytes);

                } else {
                        resp.setContentType(KML);
                        resp.getWriter().print( kmlData );
                }
        }
}
1	package dk.thoerup.traininfoservice;
2
3	import java.io.BufferedReader;
4	import java.io.ByteArrayOutputStream;
5	import java.io.File;
6	import java.io.FileInputStream;
7	import java.io.IOException;
8	import java.io.InputStream;
9	import java.io.InputStreamReader;
10	import java.text.ParseException;
11	import java.text.SimpleDateFormat;
12	import java.util.ArrayList;
13	import java.util.Date;
14	import java.util.List;
15	import java.util.Map;
16	import java.util.logging.Level;
17	import java.util.logging.Logger;
18	import java.util.zip.GZIPInputStream;
19	import java.util.zip.ZipEntry;
20	import java.util.zip.ZipOutputStream;
21
22	import javax.servlet.ServletException;
23	import javax.servlet.http.HttpServlet;
24	import javax.servlet.http.HttpServletRequest;
25	import javax.servlet.http.HttpServletResponse;
26
27	import dk.thoerup.traininfoservice.banedk.TimeoutMap;
28
29
30	public class RequestPlotter extends HttpServlet {
31	private static final long serialVersionUID = 1L;
32
33	static final Logger log = Logger.getLogger(RequestPlotter.class.getName());
34
35	static final String KML = "application/vnd.google-earth.kml";
36	static final String KMZ = "application/vnd.google-earth.kmz";
37
38	Map<String,String> cache = new TimeoutMap<String,String>(30601000);
39
40	class RequestPosition {
41	public String ip;
42	public Date time;
43	public String lat;
44	public String lng;
45	}
46
47	class PositionContainer {
48	List<RequestPosition> blue = new ArrayList<RequestPosition>();
49	List<RequestPosition> green = new ArrayList<RequestPosition>();
50	List<RequestPosition> yellow = new ArrayList<RequestPosition>();
51	List<RequestPosition> red = new ArrayList<RequestPosition>();
52	}
53
54
55	boolean isGz(String fileStr) {
56	return fileStr.substring(fileStr.length() - 3).equals(".gz");
57	}
58
59	protected PositionContainer getRequestsFromFileWorker(boolean multiple) throws IOException{
60	PositionContainer positions = new PositionContainer();
61
62	try {
63	String files_single[] = {"/var/log/apache2/app_access.log"};
64	String files_multi[] = {"/var/log/apache2/app_access.log.3.gz", "/var/log/apache2/app_access.log.2.gz", "/var/log/apache2/app_access.log.1", "/var/log/apache2/app_access.log"};
65
66	String files[];
67
68	if (multiple == false) {
69	files = files_single;
70	} else {
71	files = files_multi;
72	}
73
74	SimpleDateFormat df = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss");
75
76	Date now = new Date();
77	for (String fileStr : files ) {
78	File f = new File(fileStr);
79	if ( !f.exists() ) {
80	continue;
81	}
82
83	FileInputStream fis = new FileInputStream(fileStr);
84
85	InputStream input;
86	if ( isGz(fileStr)) {
87	input = new GZIPInputStream(fis);
88	} else {
89	input = fis;
90	}
91
92	BufferedReader in = new BufferedReader( new InputStreamReader(input) );
93
94
95	String line;
96	while ( (line=in.readLine()) != null) {
97	if (line.indexOf("LocateStation") == -1 ){
98	continue;
99	}
100
101	if (line.indexOf("latitude=") == -1 ) {
102	continue;
103	}
104
105	if (line.indexOf("longitude=") == -1) {
106	continue;
107	}
108
109	RequestPosition pos = new RequestPosition();
110
111	String toks[] = line.split(" ");
112	pos.ip = toks[0];
113
114	pos.time = df.parse( toks[3].replace("[", "") );
115
116	String argpart = toks[6].split("\\?")[1];
117
118	String args[] = argpart.split("&");
119
120	pos.lat = args[0].split("=")[1];
121	pos.lng = args[1].split("=")[1];
122
123
124	long timediff = now.getTime() - pos.time.getTime();
125	if ( timediff < (36060*1000) ) {
126	positions.red.add(pos); //RED
127	} else if ( timediff < (246060*1000)) {
128	positions.yellow.add(pos); //YELLOW
129	} else if ( timediff < (72460601000)) {
130	positions.green.add(pos); //GREEN
131	} else {
132	positions.blue.add(pos); //BLUE
133	}
134
135	}
136	in.close();
137	input.close();
138	fis.close();
139	}
140	} catch (ParseException pe) {
141	log.log(Level.SEVERE, "parseException", pe);
142	throw new IOException(pe);
143	} catch (IOException e) {
144	log.log(Level.SEVERE, "getKml()", e);
145	throw e;
146	}
147
148	return positions;
149	}
150
151	protected void formatPositions(StringBuilder sb, String color, List<RequestPosition> list) {
152	sb.append( "<Folder>\n");
153	sb.append( " <name>" ).append(color).append("</name>\n");
154	sb.append( " <open>0</open>\n" );
155
156	int count=0;
157	for(RequestPosition current : list) {
158	String id = color + count++;
159	sb.append( " <Placemark id=\"" + id + "\">\n" );
160	sb.append( " <styleUrl>#").append(color).append("</styleUrl>\n" );
161	sb.append( " <description><![CDATA[IP=").append(current.ip).append("<br/>Time=").append(current.time).append("]]></description>\n" );
162	sb.append( " <Point><coordinates>").append(current.lng).append(",").append(current.lat).append(",0</coordinates></Point>\n" );
163	sb.append( " </Placemark>\n" );
164	}
165
166	sb.append("</Folder>\n");
167	}
168
169	protected String formatXml(PositionContainer positions) {
170	StringBuilder sb = new StringBuilder(1024*1024);
171
172	sb.append( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" );
173	sb.append( "<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n" );
174	sb.append( "<Document>\n" );
175	sb.append( " <description><![CDATA[");
176	sb.append( " Red:").append(positions.red.size()).append(" (whithin 3 hours)<br/>\n");
177	sb.append( " Yellow:").append(positions.yellow.size()).append(" (within 24 hours)<br/>\n");
178	sb.append( " Green:").append(positions.green.size()).append(" (within one week)<br/>\n");
179	sb.append( " Blue:").append(positions.blue.size()).append(" (older)<br/>\n");
180	sb.append( " ]]></description>");
181
182
183	sb.append( " <Style id=\"red\">\n" );
184	sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/red-circle.png</href></Icon></IconStyle>\n" );
185	sb.append( " </Style>\n");
186
187	sb.append( " <Style id=\"yellow\">\n" );
188	sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/ylw-circle.png</href></Icon></IconStyle>\n" );
189	sb.append( " </Style>\n" );
190
191	sb.append( " <Style id=\"green\">\n" );
192	sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/grn-circle.png</href></Icon></IconStyle>\n" );
193	sb.append( " </Style>\n\n" );
194
195	sb.append( " <Style id=\"blue\">\n" );
196	sb.append( " <IconStyle><Icon><href>http://maps.google.com/mapfiles/kml/paddle/blu-circle.png</href></Icon></IconStyle>\n" );
197	sb.append( " </Style>\n\n" );
198	/*
199	String overlay =
200	" <ScreenOverlay>" +
201	" <name>Absolute Positioning: Top left</name>" +
202	" <description>Absolute Positioning: Top left</description>" +
203	" <visibility>1</visibility>" +
204	" <Icon>" +
205	" <href>http://code.google.com/apis/kml/documentation/top_left.jpg</href>" +
206	" </Icon>" +
207	" <overlayXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
208	" <screenXY x=\"0\" y=\"1\" xunits=\"fraction\" yunits=\"fraction\"/>" +
209	" <rotationXY x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
210	" <size x=\"0\" y=\"0\" xunits=\"fraction\" yunits=\"fraction\"/>" +
211	" </ScreenOverlay>" ;
212
213	sb.append(overlay);
214	*/
215
216
217	formatPositions(sb, "blue", positions.blue);
218	formatPositions(sb, "green", positions.green);
219	formatPositions(sb, "yellow", positions.yellow);
220	formatPositions(sb, "red", positions.red);
221
222
223	sb.append( "</Document>\n" );
224	sb.append( "</kml>\n" );
225
226	return sb.toString();
227	}
228
229	protected String getRequestsFromFile(boolean multiple) throws IOException {
230	String kmlData = null;
231	String key;
232
233	if (multiple == false) {
234	key = "kmldata";
235	} else {
236	key = "kmldata-multi";
237	}
238
239	kmlData = cache.get(key);
240
241	if (kmlData == null) {
242	kmlData = formatXml( getRequestsFromFileWorker(multiple) );
243	cache.put(key, kmlData);
244	kmlData += "<!-- from source -->";
245	} else {
246	kmlData += "<!-- cached -->";
247	}
248
249	return kmlData;
250	}
251
252	boolean enabled(String param) {
253	if (param == null \|\| param.equals("")) {
254	return false;
255	}
256
257	int p = 0;
258	try {
259	p = Integer.parseInt(param);
260	} catch (Exception e) {}
261
262	return (p != 0);
263	}
264
265	@Override
266	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
267
268	boolean multiple = enabled( req.getParameter("multi") );
269
270	String kmlData = getRequestsFromFile(multiple);
271
272	if ( enabled(req.getParameter("zip")) ) {
273
274	ByteArrayOutputStream baos = new ByteArrayOutputStream();
275
276	ZipOutputStream zip = new ZipOutputStream(baos);
277	zip.putNextEntry( new ZipEntry("trains.kml") );
278	zip.write( kmlData.getBytes() );
279	zip.closeEntry();
280	zip.close();
281
282	byte bytes[] = baos.toByteArray();
283
284	resp.setContentType(KMZ);
285	resp.setContentLength( bytes.length );
286	resp.getOutputStream().write(bytes);
287
288	} else {
289	resp.setContentType(KML);
290	resp.getWriter().print( kmlData );
291	}
292	}
293	}